– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 08 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 08 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryModerate rain (total 10mm), heaviest on Fri morning. Warm (max 20°C on Thu afternoon, min 5°C on Sat night). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 35mm), heaviest during Tue afternoon. Very mild (max 12°C on Sun afternoon, min 6°C on Sun morning). Wind will be generally light. | |||||||||||||||||
Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | Monday 12 | Tuesday 13 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | | | | |  | | | | | | |  |  | | |
clear | clear | rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | rain shwrs | clear | clear | clear | clear | clear | clear | rain shwrs | mod. rain | heavy rain | rain shwrs | |
Cloud base (m) | 8400 | 9450 | 600 | 600 | 600 | 750 | 750 | 850 | 2950 | 2150 | 650 | 550 | 550 | |||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | 0.9 | 6 | 1.9 | 1.4 | 0.1 | 0.4 | — | — | — | — | — | — | 0.3 | 8 | 14 | 12 |
max °C | 19 | 20 | 14 | 11 | 9 | 7 | 8 | 11 | 7 | 10 | 12 | 8 | 10 | 12 | 10 | 8 | 9 | 8 |
min °C | 16 | 19 | 12 | 10 | 7 | 6 | 6 | 9 | 5 | 6 | 11 | 7 | 6 | 12 | 8 | 7 | 8 | 6 |
chill °C | 16 | 19 | 12 | 9 | 6 | 6 | 6 | 9 | 4 | 5 | 11 | 7 | 6 | 12 | 7 | 5 | 6 | 5 |
Freezing level m | 3850 | 3700 | 3000 | 1950 | 1600 | 1500 | 1550 | 1900 | 1900 | 1950 | 2300 | 3200 | 3500 | 3100 | 3000 | 2500 | 2300 | 1450 |
 | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:24 | — | — |
 | — | 6:32 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — | — | 6:24 | — | — | 6:22 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Moderate rain (total 10mm), heaviest on Fri morning. Warm (max 20°C on Thu afternoon, min 5°C on Sat night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 35mm), heaviest during Tue afternoon. Very mild (max 12°C on Sun afternoon, min 6°C on Sun morning). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP8632 | |||||
 | |||||
SHIP11360 | |||||
SHIP4429 | |||||
SHIP4958 | |||||
SHIP9624 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.